AGREEMENT TO FILE JOINTLY AND STATEMENT APPOINTING DESIGNATED FILER AND
AUTHORIZED SIGNATORY

Each of the undersigned entities and individuals (collectively, the "Reporting
Persons") hereby authorizes and designates Meritech Capital Associates V L.L.C.
or such other person or entity as is designated in writing by Paul Madera (the
"Designated Filer") as the beneficial owner to prepare and file on behalf of
such Reporting Person individually, or jointly together with the other Reporting
Persons, any and all reports, notices, communications and other documents
(including, but not limited to, reports on Schedule 13D, Schedule 13G, Schedule
13H, Form 13-F, Form 3, Form 4 and Form 5) that such Reporting Person may be
required to file with the United States Securities and Exchange Commission
pursuant to the Securities Act of 1933, as amended (together with the
implementing regulations thereto, the "Act") and the Securities Exchange Act of
1934, as amended (together with the implementing regulations thereto, the
"Exchange Act") (collectively, the "Reports") with respect to each Reporting
Person's ownership of, or transactions in, securities of any entity whose
securities are beneficially owned (directly or indirectly) by such Reporting
Person (collectively, the "Companies").

Each Reporting Person hereby further authorizes and designates Joel Backman (the
"Authorized Signatory") to execute and file on behalf of such Reporting Person
the Reports and to perform any and all other acts, which in the opinion of the
Designated Filer or Authorized Signatory may be necessary or incidental to the
performance of the foregoing powers herein granted.

The authority of the Designated Filer and the Authorized Signatory under this
Document with respect to each Reporting Person shall continue until such
Reporting Person is no longer required to file any Reports with respect to the
Reporting Person's ownership of, or transactions in, the securities of the
Companies, unless earlier revoked in writing.  Each Reporting Person
acknowledges that the Designated Filer and the Authorized Signatory are not
assuming any of the Reporting Person's responsibilities to comply with the Act
or the Exchange Act.

March 22, 2017	MERITECH CAPITAL ASSOCIATES V L.L.C.,
		a Delaware Limited Liability Company


		By:	/s/ Paul Madera
			Paul Madera, Managing Member



March 22, 2017	MERITECH CAPITAL PARTNERS V L.P.,
		a Delaware Limited Partnership

		By:	MERITECH CAPITAL ASSOCIATES V L.L.C.,
			a Delaware Limited Liability Company
			Its General Partner


		By:	/s/ Paul Madera
			Paul Madera, Managing Member



March 22, 2017	MERITECH CAPITAL AFFILIATES V L.P.,
		a Delaware Limited Partnership

		By:	MERITECH CAPITAL ASSOCIATES V L.L.C.,
			a Delaware Limited Liability Company
			Its General Partner


		By:	/s/ Paul Madera
			Paul Madera, Managing Member


March 22, 2017	MERITECH SUB-MANAGEMENT CORPORATION
		a Delaware company


		By:	/s/ Paul Madera
			Paul Madera, Director



March 22, 2017	By:	/s/ Paul Madera
			Paul Madera


March 22, 2017	By:	/s/ Mike Gordon
			Mike Gordon


March 22, 2017	By:	/s/ George Bischof
			George Bischof


March 22, 2017	By:	/s/ Rob Ward
			Rob Ward


March 22, 2017	By:	/s/ Craig Sherman
			Craig Sherman